UV_TRACKS /HORIZON

        [ASTRO\]UV_TRACKS ...  /HORIZON Elmin [/FRAME  [size]]  [/HOUR_ANGLE
    Hmin  [Hmax]]  [/TABLE  [Name]]  [/INTEGRATION  t]  [/STATIONS ALL|list]
    [/WEIGHT Mode]

    Option /HORIZON specifies a  minimum  elevation  (in  degrees)  for  the
    source.